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Fixed Assets And Asset Retirement Obligations (Tables)
6 Months Ended
Jun. 30, 2012
Fixed Assets And Asset Retirement Obligations [Abstract]  
Schedule Of Fixed Assets
 
June 30,
2012
 
December 31,
2011
Pipelines and related assets
$
205,435

 
$
167,865

Machinery and equipment
47,639

 
46,233

Transportation equipment
20,051

 
21,732

Marine vessels
297,400

 
262,216

Land, buildings and improvements
13,278

 
13,140

Office equipment, furniture and fixtures
4,397

 
3,778

Construction in progress
52,044

 
14,236

Other
11,934

 
11,938

Fixed assets, at cost
652,178

 
541,138

Less: Accumulated depreciation
(139,926
)
 
(124,213
)
Net fixed assets
$
512,252

 
$
416,925

Schedule Of Reconciliation Of Liability For Asset Retirement Obligations
December 31, 2011
$
5,900

Liabilities incurred and assumed in the current period
5,995

Accretion expense
400

June 30, 2012
$
12,295